National Institute of Advanced Industrial Science and Technology (AIST) This page is a page of the former research institute. We stopped updating on March 31.2001.
E-mail to webmaster (Japanese) E-mail to webmaster (English)

Effect of Alkyl Substituents on the Selective Extraction of Copper (II), Palladium (II), Gallium (III) and Molybdenum (VI) with Novel 8-Quinolinol Derivatives

K. Ohashi, H. Imura, S. Mochizuki, and K. Hiratani
[Min. Pro. Ext. Met. Rev., Vol.17, pp.169-194, 1997]

The partition coefficient between heptane or chloroform and 0.1 M NaCl aqueous solution, and the acid dissociation constants of 5-alkyloxymethyl-8-quinolinol (HOnQ) were determined. Also, the extraction and back-extraction behavior, extraction equilibrium and kinetics, and the separation of Cu(II), Mo(VI), Pd(II), Ga(III), Co(II), and Ni(II) with novel 8-quinolinol derivatives (HA) have been investigated. Cu(II) was extracted with HO8Q, HMO8Q, and 5-(4-nitrophenylazo)-7-(4-ethyl-1-methyloctyl)-8-quinolinol (HNEQ) into chloroform as Cu(A)2.

Back to ABSTRACTS97 Index